Initialization Method of Nozzle Flow Field Based on One-Dimensional Isentropic Theory and the Study of Its Application

3rd International Conference on Aeronautical Materials and Aerospace Engineering

航空航天工程

Zhao, HaiLong^1 ; Peng, Ke^1 ; Zhang, WeiHua^1 ; Fan, YuZhu^2 ; Jie, JinLiang^1

College of Aerospace Science and Engineering, National University of Defense Technology, No.109 DeYa Street, ChangSha, HuNan, China^1

Jiuquan Satellite Launch Center, China^2

关键词: Axisymmetric nozzles;    Calculation efficiency;    Computational Fluid Dynamics software;    Convergence process;    Convergence speed;    Initialization methods;    Model calculations;    Numerical calculation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/608/1/012012/pdf
DOI  :  10.1088/1757-899X/608/1/012012

学科分类：航空航天科学

来源: IOP

【 摘 要 】

The two-dimensional axisymmetric nozzle is initialized by two methods which are the hybrid initialization method of the commercial computational fluid dynamics software Fluent and the initialization program based on the one-dimensional isentropic theory. The first-order upwind format is combined with the SA model to solve the two-dimensional axisymmetric nozzle under the same boundary conditions. The convergence process is obtained in the process of numerical calculation, and the influence of two different initialization methods on the convergence process is analysed. The results show that the initialization method based on the one-dimensional isentropic theory effectively improves the convergence of the nozzle numerical model calculation process, accelerates the convergence speed and improves the calculation efficiency.